Question: Which group claimed a homeland in parts of both the country Shiraz is located and the country where the brother who followed Al-Mu'tamid to the throne was a citizen?
Context: Document 1: Mu'nis al-Fahl: Under al-Mu'tadid he served as commander of the caliph's personal guard and led various expeditions against Bedouins and other restive elements in Iraq, while al-Muqtafi dispatched him in 906 against the Qarmatians. After al-Muqtafi's death, he played a decisive role in the suppression of the palace coup that briefly deposed al-Muqtadir in favour of Abdallah ibn al-Mu'tazz. He was then named treasurer ("khazin") and chief of security ("sahib al-shurta") to the Caliph. He died in 914.
Document 2: Hafez: Hafez was born in Shiraz, Iran. His parents were from Kazerun, Fars Province. Despite his profound effect on Persian life and culture and his enduring popularity and influence, few details of his life are known. Accounts of his early life rely upon traditional anecdotes. Early tazkiras (biographical sketches) mentioning Hafez are generally considered unreliable. At an early age, he memorized the Quran and was given the title of Hafez, which he later used as his pen name. The preface of his Divān, in which his early life is discussed, was written by an unknown contemporary whose name may have been Moḥammad Golandām. Two of the most highly regarded modern editions of Hafez's Divān are compiled by Moḥammad Ghazvini and Qāsem Ḡani (495 ghazals) and by Parviz Natel-Khanlari (486 ghazals).Modern scholars generally agree that Hafez was born either in 1315 or 1317.  According to an account by Jami, Hafez died in 1390. Hafez was supported by patronage from several successive local regimes: Shah Abu Ishaq, who came to power while Hafez was in his teens; Timur at the end of his life; and even the strict ruler Shah Mubariz ud-Din Muhammad (Mubariz Muzaffar). Though his work flourished most under the 27-year rule of Jalal ud-Din Shah Shuja (Shah Shuja), it is claimed Hāfez briefly fell out of favor with Shah Shuja for mocking inferior poets (Shah Shuja wrote poetry himself and may have taken the comments personally), forcing Hāfez to flee from Shiraz to Isfahan and Yazd, but no historical evidence is available. He is said to have been in Timur's court, as Hafez wrote a ghazal whose verse says if this Turk accept his homage:
Document 3: Kurdistan: Kurdistan (/ ˌkɜːrdɪˈstæn, ˈstɑːn /; Kurdish: کوردستان ‎ (ˌkʊɾdɯˈstɑːn) (listen); lit. ``homeland of the Kurds '') or Greater Kurdistan is a roughly defined geo - cultural historical region wherein the Kurdish people form a prominent majority population and Kurdish culture, languages and national identity have historically been based. Kurdistan roughly encompasses the northwestern Zagros and the eastern Taurus mountain ranges. The territory corresponds to Kurdish irredentist claims.
Document 4: Al-Mu'tadid: Al-Mu'tadid was the son of al-Muwaffaq, who was the regent and effective ruler of the Abbasid state during the reign of his brother, Caliph al-Mu'tamid. As a prince, the future al-Mu'tadid served under his father during various military campaigns, most notably in the suppression of the Zanj Rebellion, in which he played a major role. When al-Muwaffaq died in June 891 al-Mu'tadid succeeded him as regent. He quickly sidelined his cousin and heir-apparent al-Mufawwad, and when al-Mu'tamid died in October 892, he succeeded to the throne. Like his father, al-Mu'tadid's power depended on his close relations with the army. These were first forged during the campaigns against the Zanj and were reinforced in later expeditions which the Caliph led in person: al-Mu'tadid would prove to be the most militarily active of all Abbasid caliphs. Through his energy and ability, he succeeded in restoring to the Abbasid state some of the power and provinces it had lost during the turmoil of the previous decades.
Answer: Kurdish people
Reasoning steps: Al-Mu'tamid >> followed by Answer: Al-Mu'tadid
Al-Mu'tadid >> country of citizenship Answer: Iraq
What nation is Shiraz in? Answer: Iran.
who claimed a homeland in parts of turkey Iran. and #2 Answer: Kurdish people